Flojet gt is graphite textured tape produced from natural graphite flakes available as mineral in earth. Graphite textured tape is a sophisticated and adaptable valve system packing- a predetermined length of tape is wound on to the stem and then compressed until the stuffing box is full. A small inventory can pack any size valve with excellent sealing service by using this system. Graphite textured tape is also offered in die formed rings engineered to individual requirements. Its operation specifications are: temperature range: -200° c to 600° c pressure: 3,000 psi; and ph: 0-14.